Perpetual wall calendar



FIG. 1 is a front perspective view of a perpetual wall calendar showing my new design on an enlarged scale;

FIG. 2 is a front elevational view;

FIG. 3 is a right side elevational view;

FIG. 4 is a left side elevational view;

FIG. 5 is a top plan view; and

FIG. 6 is a bottom plan view thereof.

The undisclosed rear surface is conventionally flat and unornamented. 

The ornamental design for perpetual wall calendar, as shown and described. 